package com.atguigu.springcloud.controller;

import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import com.atguigu.springcloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import sun.rmi.server.LoaderHandler;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * Created by CJY on 2020/11/23.
 */
@RestController
@Slf4j
public class OrderController {
//    单机
//    public static  final  String  PAYMENT_URL = "http://localhost:8001";
//    集群
    public static  final  String  PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";
    @Resource
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;

    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){

        return  restTemplate.postForObject(PAYMENT_URL +"/payment/create",payment,CommonResult.class);
    }
    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        log.info("*****************阿萨德阿萨德啊ad按我**** 阿萨插入结果:"+id);
        return restTemplate.getForObject(PAYMENT_URL +"/payment/get/" +id,CommonResult.class);

    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id){
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL +"/payment/get/" +id,CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else{
            return new CommonResult<>(444,"操作失败");
        }
    }

    /**
     * 需要注释掉ApplicationContextConfig中LoadBalanced注解
     * @return
     */
    @GetMapping(value = "/consumer/payment/1b")
    public String getPaymentLB(){
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if(instances == null || instances.size() <= 0){
            return null;
        }else {
            ServiceInstance serviceInstance =loadBalancer.instances(instances);
            URI uri = serviceInstance.getUri() ;

            return restTemplate.getForObject(uri +"/payment/1b",String.class);
        }
    }
}
